Simulation of Rough Surface Scattering in Three-Dimensions
Abstract
The standard iterative approach has been used to solve the integral equation for the surface current density on a perfectly conducting surface. The number of iterations necessary was established to be only one to obtain a good agreement (within 1dB) between the iterative method and the standard moment method when the incidence angle was smaller than 60 degrees and the rms slope smaller than 0.4. While three-dimensional surface scattering problem can be solved with this method, it was found to be time consuming. For this reason further study has been made to look for a more effective method by finding an optimum basis function to represent the unknown field. During the past quarter a spectral representation was used to represent the scattered field and the tangenital boundary condition was used to determine the scattered field directly. Initial test was carried out for a two-dimensional surface scattering problem. It was found that an hour calculation on VAX 8700 using the standard moment method could be reduced to 3 minutes with the present technique. (jhd)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1989
- Accession Number
- ADA215171
Entities
People
- A. K. Fung
- P. M. Chen
Organizations
- University of Texas at Arlington